A Framework for Evaluation of the Higher-Risk Infant After a Brief Resolved Unexplained Event

Brief Resolved Unexplained Events Symptoms Frequently Result in Inappropriate Gastrointestinal Diagnoses and Treatment

OBJECTIVE

To determine associations between presenting symptoms and oropharyngeal dysphagia diagnoses, gastroesophageal reflux disease (GERD) diagnoses, and treatment with acid suppression medication in infants with brief resolved unexplained event (BRUE).

STUDY DESIGN

We performed a prospective cohort study of infants with BRUE to review presenting symptoms and their potential impact on testing and treatment. Videofluoroscopic swallow study (VFSS) results and explanatory diagnoses were obtained from medical record review; acid suppression use was determined by parental survey. Binary and multivariable logistic regression models were used to evaluate associations between presenting symptoms and obtaining VFSS, VFSS results, GERD diagnoses, and acid suppression medication.

RESULTS

Presenting symptoms were varied in 157 subjects enrolled at 51.0±5.3 days of age, with many symptoms that may be related to GERD or dysphagia. Of these, 28% underwent VFSS with 71% abnormal. Overall, 42% had their BRUE attributed to GERD and 33% were treated with acid suppression during follow-up. Presenting symptoms were significantly associated with the decision to obtain VFSS but not with abnormal VFSS results. Presenting symptoms were also associated with provision of GERD explanatory diagnoses. Both presenting symptoms and GERD explanatory diagnoses were associated with acid suppression use (aOR 2.3, 95% CI 1.03-5.3, p=0.04).

CONCLUSIONS

Presenting symptoms may play a role in clinicians' decisions about which BRUE patients undergo VFSS but are unreliable to make a diagnosis of oropharyngeal dysphagia. Presenting symptoms may also influence assignment of a GERD explanatory diagnoses that is associated with increased acid suppression medication use.

Epidemiology of brief resolved unexplained events and impact of clinical practice guidelines in general and pediatric emergency departments

OBJECTIVES

The aim of this study was to describe the incidence of brief resolved unexplained events (BRUEs) and compare the impact of a national clinical practice guideline (CPG) on admission and diagnostic testing practices between general and pediatric emergency departments (EDs).

METHODS

Using the Nationwide Emergency Department Sample for 2012-2019, we conducted a cross-sectional study of children <1 year of age with an International Classification of Diseases diagnostic code for BRUE. Population incidence rate was estimated using Centers for Disease Control and Prevention birth data. ED incidence rate was estimated for all ED encounters. We used interrupted time series to evaluate the associated impact of the CPG publication on the outcomes of ED disposition (discharge, admission, and transfer) and electrocardiogram (ECG) use.

RESULTS

Of 133,972 encounters for BRUE, 80.0% occurred in general EDs. BRUE population incidence was 4.28 per 1000 live births and the annual incidence remained stable (p = 0.19). BRUE ED incidence was 5.06 per 1000 infant ED encounters (p = 0.14). The impact of the BRUE CPG on admission rates was limited to pediatric EDs (level shift -23.3%, p = 0.002). Transfers from general EDs did not change with the CPG (level shift 2.2%, p = 0.17). After the CPG was published, ECGs increased by 13.7% in pediatric EDs (p = 0.005) but did not change in general EDs (level shift -0.2%, p = 0.82).

CONCLUSIONS

BRUEs remain a common pediatric problem at a population level and in EDs. Although a disproportionate number of infants present to general EDs, there is differential uptake of the CPG recommendations between pediatric and general EDs. These findings may support quality improvement opportunities aimed at improving care for these infants and decreasing unnecessary hospital admissions or transfers.

Early predictors for maltreatment-related injuries in infancy and long-term mortality: a population-based study

INTRODUCTION

Incidence, health consequences, and social burden associated with child maltreatment appeared to be borne disproportionately by very young children. We conducted a population-based data linkage study to explore child- and family-level factors that affect receiving different diagnoses of maltreatment injuries and investigate excessive mortality throughout toddlerhood.

METHODS

We conducted a retrospective cohort study comprising 2.2 million infants born in 2004-2014 in Taiwan. Incident cases of child maltreatment were defined by hospitalization or emergency department visits for three heterogeneous diagnostic groups of maltreatment-related injuries (i.e., maltreatment syndrome, assaults, and undetermined causes) within 12 months after birth. The generalized linear model and landmark survival analyses were used to evaluate risk factors.

RESULTS

An estimated 2.9‰ of infants experienced at least one maltreatment-related injury, with a three-year mortality rate of 1.3%. Low birthweight was associated with increased risk of receiving the diagnosis of three maltreatment injuries, particularly maltreatment syndrome (adjusted Incidence Rate Ratio [aIRR] = 4.08, 95% confidence interval [CI]: 2.93-5.68). Socially advantaged family condition was inversely linked with receiving the diagnosis of maltreatment syndrome and assaults (e.g., high income: aIRR = 0.55 and 0.47), yet positively linked with undetermined cause (aIRR = 2.05, 95% CI: 1.89-2.23). For infants exposed to maltreatment, low birth weight and non-attendance of postnatal care were highly predictive of fatality; low birthweight served as a vital predictor for premature death during toddlerhood (aIRR = 6.17, 95% CI: 2.36-15.4).

CONCLUSIONS

Raising awareness of maltreatment-related injuries in infancy and predictors should be a priority for appropriate follow-up assessment and timely intervention.

Medical Child Abuse: A Review by Subspecialty

Medical child abuse (MCA), formerly called Munchausen syndrome by proxy (MSP or MSBP), occurs when a caregiver, usually the mother, falsifies or exaggerates symptoms resulting in harm to a child through inappropriate medical care. MCA is underrecognized, underreported, and results in significant morbidity and mortality. Pediatrics subspecialists should consider MCA when unusual disease presentation [THAT] do not respond to traditional treatments. This article reviews the more common diagnoses encountered in MCA cases by specialty.

Brief resolved unexplained event: Severity-associated factors at admission in the pediatric emergency ward

OBJECTIVE

A brief resolved unexplained event (BRUE) is a recent clinical entity that has now replaced the term "infant discomfort". Despite the availability of recent recommendations, identification of patients requiring further examination remains difficult.

METHOD

We aimed to identify factors associated with severe pathology and/or recurrence by studying the medical files of 767 patients admitted to the pediatric emergency department of a French university hospital for a BRUE.

RESULTS

Overall, 255 files were studied; 45 patients had a recurrence and 23 patients had a severe diagnosis. The most frequently found etiology was gastroesophageal reflux in the benign diagnosis group and apnea or central hypoventilation in the severe diagnosis group. Prematurity (p = 0.032) and time since last meal >1 h (p = 0.019) were the main factors associated with severe disease. Most of the routine examination results remained non-contributive to the etiology.

CONCLUSION

As prematurity is a factor associated with severe diagnosis, special attention should be given to this population, without subjecting them to multiple tests, since the main complication was found to be apnea or central hypoventilation. Prospective research is needed to establish the usefulness and prioritization of diagnostic tests for infants who are at "high risk" of experiencing a BRUE.

Images: Caffeine therapy for central sleep apnea, hypoxemia, and hypoventilation in a term neonate

The evaluation of higher-risk infants with brief resolved unexplained events and term infants with central sleep apnea can be clinically challenging due to the multitude of potential etiologies. We report a 7-day-old term neonate hospitalized for evaluation of brief resolved unexplained events with oxygen desaturations during sleep. Polysomnography showed central sleep apnea, hypoxemia, hypoventilation, periodic breathing, and mild obstructive sleep apnea. Following initial evaluations and while awaiting genetic testing, primary central sleep apnea of infancy was suspected and caffeine was initiated. Three days after initiating caffeine, polysomnography showed resolution of hypoxemia, hypoventilation, obstructive sleep apnea, and periodic breathing and improved central sleep apnea. The central apnea-hypopnea index reduced from 58 to 6.8 events/h. Although caffeine is utilized in apnea of prematurity, there is limited literature regarding caffeine in term infants with apnea. Our case demonstrates that in term infants with primary central sleep apnea of infancy, immature regulation of respiration may persist and a trial of caffeine could be considered.

CITATION

Shah AS, Leu RM, Shah SP, Martinez F, Kasi AS. Caffeine therapy for central sleep apnea, hypoxemia, and hypoventilation in a term neonate. J Clin Sleep Med. 2023;19(5):1005-1008.

Diagnostic testing for and detection of physical abuse in infants with brief resolved unexplained events

BACKGROUND

A Brief Resolved Unexplained Event (BRUE) can be a sign of occult physical abuse.

OBJECTIVES

To identify rates of diagnostic testing able to detect physical abuse (head imaging, skeletal survey, and liver transaminases) at BRUE presentation. The secondary objective was to estimate the rate of physical abuse diagnosed at initial BRUE presentation through 1 year of age.

PARTICIPANTS AND SETTING

Infants who presented with a BRUE at one of 15 academic or community hospitals were followed from initial BRUE presentation until 1 year of age for BRUE recurrence or revisits.

METHODS

This study was part of the BRUE Research and Quality Improvement Network, a multicenter retrospective cohort examining infants with BRUE. Generalized estimating equations assessed associations with performance of diagnostic testing (adjusted odds ratio (aOR)).

RESULTS

Of the 2036 infants presenting with a BRUE, 6.2 % underwent head imaging, 7.0 % skeletal survey, and 12.1 % liver transaminases. Infants were more likely to undergo skeletal survey if there were physical examination findings concerning for trauma (aOR 8.23, 95 % CI [1.92, 35.24], p < 0.005) or concerning social history (aOR 1.89, 95 % CI [1.13, 3.16], p = 0.015). There were 7 (0.3 %) infants diagnosed with physical abuse: one at BRUE presentation, one <3 days after BRUE presentation, and five >30 days after BRUE presentation.

CONCLUSION

There were low rates of diagnostic testing and physical abuse identified in infants presenting with BRUE. Further study including standardized testing protocols is warranted to identify physical abuse in infants presenting with a BRUE.

A Prospective Study of Brief Resolved Unexplained Events: Risk Factors for Persistent Symptoms

OBJECTIVE

The risk of persistent symptoms after a brief resolved unexplained event (BRUE) is not known. Our objective was to determine the frequency and risk factors for persistent symptoms after BRUE hospitalizations.

METHODS

We conducted a prospective longitudinal cohort study of infants hospitalized with an admitting diagnosis of BRUE. Caregiver-reported symptoms, anxiety levels, and management changes were obtained by questionnaires during the 2-month follow-up period. Clinical data including repeat hospitalizations were obtained from a medical record review. Multivariable analyses with generalized estimating equations were conducted to determine the risk of persistent symptoms.

RESULTS

Of 124 subjects enrolled at 51.6 ± 5.9 days of age, 86% reported symptoms on at least 1 questionnaire after discharge; 65% of patients had choking episodes, 12% had BRUE spells, and 15% required a repeat hospital visit. High anxiety levels were reported by 31% of caregivers. Management changes were common during the follow-up period and included 30% receiving acid suppression and 27% receiving thickened feedings. Only 19% of patients had a videofluoroscopic swallow study while admitted, yet 67% of these studies revealed aspiration/penetration.

CONCLUSIONS

Many infants admitted with BRUE have persistent symptoms and continue to access medical care, suggesting current management strategies insufficiently address persistent symptoms. Future randomized trials will be needed to evaluate the potential efficacy of therapies commonly recommended after BRUE.

Canadian infants presenting with Brief Resolved Unexplained Events (BRUEs) and validation of clinical prediction rules for risk stratification: a protocol for a multicentre, retrospective cohort study

INTRODUCTION

Brief Resolved Unexplained Events (BRUEs) are a common presentation among infants. While most of these events are benign and self-limited, guidelines published by the American Academy of Pediatrics inaccurately identify many patients as higher-risk of a serious underlying aetiology (positive predictive value 5%). Recently, new clinical prediction rules have been derived to more accurately stratify patients. This data were however geographically limited to the USA, with no large studies to date assessing the BRUE population in a different healthcare setting. The study's aim is to describe the clinical management and outcomes of infants presenting to Canadian hospitals with BRUEs and to externally validate the BRUE clinical prediction rules in identified cases.

METHODS AND ANALYSIS

This is a multicentre retrospective study, conducted within the Canadian Paediatric Inpatient Research Network (PIRN). Infants (<1 year) presenting with a BRUE at one of 11 Canadian paediatric centres between 1 January 2017 and 31 December 2021 will be included. Eligible patients will be identified using diagnostic codes.The primary outcome will be the presence of a serious underlying illness. Secondary outcomes will include BRUE recurrence and length of hospital stay. We will describe the rates of hospital admissions and whether hospitalisation was associated with an earlier diagnosis or treatment. Variation across Canadian hospitals will be assessed using intraclass correlation coefficient. To validate the newly developed clinical prediction rule, measures of goodness of fit will be evaluated. For this validation, a sample size of 1182 is required to provide a power of 80% to detect patients with a serious underlying illness with a significance level of 5%.

ETHICS AND DISSEMINATION

Ethics approval has been granted by the UBC Children's and Women's Research Board (H21-02357). The results of this study will be disseminated as peer-reviewed manuscripts and presentations at national and international conferences.

Risk Prediction After a Brief Resolved Unexplained Event

OBJECTIVES

Only 4% of brief resolved unexplained events (BRUE) are caused by a serious underlying illness. The American Academy of Pediatrics (AAP) guidelines do not distinguish patients who would benefit from further investigation and hospitalization. We aimed to derive and validate a clinical decision rule for predicting the risk of a serious underlying diagnosis or event recurrence.

METHODS

We retrospectively identified infants presenting with a BRUE to 15 children's hospitals (2015-2020). We used logistic regression in a split-sample to derive and validate a risk prediction model.

RESULTS

Of 3283 eligible patients, 565 (17.2%) had a serious underlying diagnosis (n = 150) or a recurrent event (n = 469). The AAP's higher-risk criteria were met in 91.5% (n = 3005) and predicted a serious diagnosis with 95.3% sensitivity, 8.6% specificity, and an area under the curve of 0.52 (95% confidence interval [CI]: 0.47-0.57). A derived model based on age, previous events, and abnormal medical history demonstrated an area under the curve of 0.64 (95%CI: 0.59-0.70). In contrast to the AAP criteria, patients >60 days were more likely to have a serious underlying diagnosis (odds ratio:1.43, 95%CI: 1.03-1.98, P = .03).

CONCLUSIONS

Most infants presenting with a BRUE do not have a serious underlying pathology requiring prompt diagnosis. We derived 2 models to predict the risk of a serious diagnosis and event recurrence. A decision support tool based on this model may aid clinicians and caregivers in the discussion on the benefit of diagnostic testing and hospitalization (https://www.mdcalc.com/calc/10400/brief-resolved-unexplained-events-2.0-brue-2.0-criteria-infants).

Accelerating the genetic diagnosis of neurological disorders presenting with episodic apnoea in infancy

Unexplained episodic apnoea in infants (aged ≤1 year), including recurrent brief (<1 min) resolved unexplained events (known as BRUE), can be a diagnostic challenge. Recurrent unexplained apnoea might suggest a persistent, debilitating, and potentially fatal disorder. Genetic diseases are prevalent among this group, particularly in those who present with paroxysmal or episodic neurological symptoms. These disorders are individually rare and challenging for a general paediatrician to recognise, and there is often a delayed or even posthumous diagnosis (sometimes only made in retrospect when a second sibling becomes unwell). The disorders can be debilitating if untreated but pharmacotherapies are available for the vast majority. That any child should suffer from unnecessary morbidity or die from one of these disorders without a diagnosis or treatment having been offered is a tragedy; therefore, there is an urgent need to simplify and expedite the diagnostic journey. We propose an apnoea gene panel for hospital specialists caring for any infant who has recurrent apnoea without an obvious cause. This approach could remove the need to identify individual rare conditions, speed up diagnosis, and improve access to therapy, with the ultimate aim of reducing morbidity and mortality.

Brief resolved unexplained events: a new diagnosis, with implications for evaluation and management

Brief resolved unexplained events (BRUE) are concerning episodes of short duration (typically < 1 min) characterized by a change in breathing, consciousness, muscle tone (hyper- or hypotonia), and/or skin color (cyanosis or pallor). The episodes occur in a normal-appearing infant in the first year of life, self-resolve, and have no readily identifiable explanation for the cause of the event. Previously called apparent life-threatening events (ALTE), the term BRUE was first defined by the American Academy of Pediatrics (AAP) in 2016. The criteria for BRUE carry greater specificity compared to that of ALTE and additionally are indicative of a diagnosis of exclusion. While most patients with BRUE will have a benign clinical course, important etiologies, including airway, cardiac, gastrointestinal, genetic, infectious, neurologic, and traumatic conditions (including nonaccidental), must be carefully considered. A BRUE is classified as either lower- or higher-risk based on patient age, corrected gestational age, event duration, number of events, and performance of cardiopulmonary resuscitation at the scene. The AAP clinical practice guideline provides recommendations for the management of lower-risk BRUEs, advocating against routine admission, blood testing, and imaging for infants with these events, though a short period of observation and/or an electrocardiogram may be advisable. While guidance exists for higher-risk BRUE, more data are required to better identify proportions and risk factors for serious outcomes among these patients. Conclusion: BRUE is a diagnosis with greater specificity relative to prior definitions and is now a diagnosis of exclusion. Additional research is needed, particularly in the evaluation of higher-risk events. Recent data suggest that the AAP guidelines for the management of lower-risk infants can be safely implemented.This review article summarizes the history, definitional changes, current guideline recommendations, and future research needs for BRUE. What is Known: • BRUE, first described in 2016, is a diagnosis used to describe a well-appearing infant who presents with change in breathing, consciousness, muscle tone (hyper- or hypotonia), and/or skin color (cyanosis or pallor). • BRUE can be divided into higher- and lower-risk events. Guidelines have been published for lower-risk events, with expert recommendations for higher-risk BRUE. What is New: • BRUE carries a low rate of serious diagnoses (< 5%), with the most common representing seizures and airway abnormalities. • Prior BRUE events are associated with serious diagnoses and episode recurrence.

Brief Resolved Unexplained Event: Not Just a New Name for Apparent Life-Threatening Event

OBJECTIVES

This study aimed to evaluate patients who presented to the pediatric emergency department with an apparent life-threatening event (ALTE) to (1) determine if these patients would meet the criteria for brief resolved unexplained event (BRUE), a new term coined by the American Academy of Pediatrics in May, 2016; (2) risk stratify these patients to determine if they meet the BRUE low-risk criteria; and (3) evaluate outcomes of patients meeting the criteria for BRUE.

METHODS

We conducted a retrospective chart review of patients who presented to a large urban academic center pediatric emergency department with an ALTE from January 2013 to May 2015 (before the publication of the BRUE guideline). Children ≤12 months of age were identified by the International Classification of Diseases, Ninth/Tenth Revision. Two physician reviews were performed to determine if patients met the ALTE diagnostic criteria. Data were then extracted from these charts to complete objectives.

RESULTS

Seventy-eight patients met the diagnostic criteria for ALTE. Only 1 of those patients met the diagnostic criteria for BRUE, but not for low-risk BRUE. This patient underwent an extensive inpatient evaluation and was eventually discharged after monitoring with a benign diagnosis. Most patients did not meet the criteria for BRUE because the event was not unexplained.

CONCLUSIONS

Only 1 patient who presented to the ED with ALTE met the criteria for BRUE, and this patient did not meet the low-risk criteria. This study corroborates previous research on BRUE and continues to highlight the importance of conducting a thorough history and physical examination on all patients presenting to the ED with concerning events.

Explanatory Diagnoses Following Hospitalization for a Brief Resolved Unexplained Event

BACKGROUND AND OBJECTIVES

Most young infants presenting to the emergency department (ED) with a brief resolved unexplained event (BRUE) are hospitalized. We sought to determine the rate of explanatory diagnosis after hospitalization for a BRUE.

METHODS

This was a multicenter retrospective cohort study of infants hospitalized with a BRUE after an ED visit between October 1, 2015, and September 30, 2018. We included infants without an explanatory diagnosis at admission. We determined the proportion of patients with an explanatory diagnosis at the time of hospital discharge and whether diagnostic testing, consultation, or observed events occurring during hospitalization were associated with identification of an explanatory diagnosis.

RESULTS

Among 980 infants hospitalized after an ED visit for a BRUE without an explanatory diagnosis at admission, 363 (37.0%) had an explanatory diagnosis identified during hospitalization. In 805 (82.1%) infants, diagnostic testing, specialty consultations, and observed events did not contribute to an explanatory diagnosis, and, in 175 (17.9%) infants, they contributed to the explanatory diagnosis (7.0%, 10.0%, and 7.0%, respectively). A total of 15 infants had a serious diagnosis (4.1% of explanatory diagnoses; 1.5% of all infants hospitalized with a BRUE), the most common being seizure and infantile spasms, occurring in 4 patients.

CONCLUSIONS

Most infants hospitalized with a BRUE did not receive an explanation during the hospitalization, and a majority of diagnoses were benign or self-limited conditions. More research is needed to identify which infants with a BRUE are most likely to benefit from hospitalization for determining the etiology of the event.

Pediatrician Perspectives on Brief Resolved Unexplained Events

BACKGROUND AND OBJECTIVE

The objective with this study was to describe pediatric emergency department (ED) physicians' perspective on the evaluation and management of brief resolved unexplained events (BRUEs) to help support the development of quality improvement interventions for this population.

METHODS

We conducted qualitative semistructured interviews with pediatric ED providers who practice in a single state. Interviews were audio-recorded and transcribed and demographic information was also obtained. The 6-phase approach to reflexive thematic analysis was used to conduct the qualitative analysis.

RESULTS

Nineteen pediatric ED physicians practicing in 4 institutions across our state participated in the study. The majority of participants (95%) practice in a university-affiliated setting. The primary themes related to providing care for patients with a BRUE identified in our analysis were (1) reassurance, (2) caregiver or provider concern, and (3) clinical practice guideline availability and interpretation. Closely intertwined underlying topics informing BRUE patient management were also noted: (1) ambiguity in the BRUE diagnosis and its management; (2) a need for shared decision-making between the caregiver and the provider; and (3) concern over the increased time spent with caregivers during an ED visit for a diagnosis of BRUE. These complex relationships were found to influence patient evaluation and disposition.

CONCLUSION

Multifaceted quality improvement interventions should address caregiver and provider concerns regarding the diagnosis of BRUE while providing decision aids to support shared decision-making with caregivers.

Accuracy of Diagnostic Codes for Identifying Brief Resolved Unexplained Events

OBJECTIVES

To evaluate International Classification of Diseases, 10th Revision (ICD-10) coding strategies for the identification of patients with a brief resolved unexplained event (BRUE).

METHODS

Multicenter retrospective cohort study, including patients aged <1 year with an emergency department (ED) visit between October 1, 2015, and September 30, 2018, and an ICD-10 code for the following: (1) BRUE; (2) characteristics of BRUE; (3) serious underlying diagnoses presenting as a BRUE; and (4) nonserious diagnoses presenting as a BRUE. Sixteen algorithms were developed by using various combinations of these 4 groups of ICD-10 codes. Manual chart review was used to assess the performance of these ICD-10 algorithms for the identification of (1) patients presenting to an ED who met the American Academy of Pediatrics clinical definition for a BRUE and (2) the subset of these patients discharged from the ED or hospital without an explanation for the BRUE.

RESULTS

Of 4512 records reviewed, 1646 (36.5%) of these patients met the American Academy of Pediatrics criteria for BRUE on ED presentation, 1016 (61.7%) were hospitalized, and 959 (58.3%) had no explanation on discharge. Among ED discharges, the BRUE ICD-10 code alone was optimal for case ascertainment (sensitivity: 89.8% to 92.8%; positive predictive value: 51.7% to 72.0%). For hospitalized patients, ICD-10 codes related to the clinical characteristics of BRUE are preferred (specificity 93.2%, positive predictive value 32.7% to 46.3%).

CONCLUSIONS

The BRUE ICD-10 code and/or the diagnostic codes for the characteristics of BRUE are recommended, but the choice between approaches depends on the investigative purpose and the specific BRUE population and setting of interest.

Neonatal respiratory inhibition

OBJECTIVE

To present information on neonatal respiratory inhibition (NRI) to the medical staff caring for infants.

METHODS

The author reviewed investigations of the above conditions. NRI is defined as severe hypoxemia accompanied by clinical manifestations of central cyanosis and a decrease in SpO₂ to less than 70%. Neonatal respiratory inhibition consists of respiratory inhibition after crying (RIAC), feeding hypoxemia, and respiratory inhibition after gastroesophageal reflux (RIGER). The infants were monitored continuously via pulse oximetry from birth until discharge. To identify the details of NRI, we analyzed detailed notes taken by both parents and medical staff during monitoring using specific software designed to interpret pulse oximetry measurements.

RESULTS

Among infants who weighed at least 2000 g and who were born at a gestational age of at least 36 weeks, NRI was observed in ∼50% of infants, including RIAC in ∼25%, feeding hypoxemia in 40%, and RIGER in 2 ∼ 4%, respectively. Among the infants with NRI, ∼40% experienced one or more episodes of prolonged cyanosis for at least 60 s. RIAC, feeding hypoxemia, and RIGER is significantly associated with each other. Among perinatal factors, NRI was related to maternal diabetes mellitus, twin pregnancy, asymmetric intrauterine growth restriction, threatened premature labor, cesarean section, shorter gestational periods, and abnormal ultrasound findings, including increased echogenicity in the ganglionic eminence (GE), a cyst in the GE, a subependymal cyst, and slight lateral ventricular enlargement. Almost all infants with RIAC and RIGER, even those with severe cases, recovered until discharge around day 5. Despite the provision of nursing guidance in feeding control, ∼60% of infants experienced feeding hypoxemia continuously. The more frequently the infants experienced feeding hypoxemia, the more severe the degree of feeding hypoxemia became. Breastfeeding reduced the frequency and degree of feeding hypoxemia compared to bottle feeding. Approximately 40% of infants with feeding hypoxemia required additional feeding control after being discharged.

CONCLUSIONS

NRI is very common and occurs in many infants worldwide. The infants with NRI experienced repeated severe hypoxemia due to RIAC, feeding hypoxemia, and RIGER after birth. Breastfeeding and careful feeding control should be recommended to mothers of infants with repeated feeding hypoxemia. Spreading knowledge about NRI worldwide is very important.

Long-Term Pulmonary Damage From SARS-CoV-2 in an Infant With Brief Unexplained Resolved Events: A Case Report

A brief unexplained resolved event (BRUE) is an event observed in a child under 1 year of age in which the observer witnesses a sudden, brief but resolved episode of change in skin color, lack of breathing, weakness or poor responsiveness. Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is the causative agent of coronavirus disease-2019 (COVID-19). We report the case of a previously healthy, full-term infant infected with SARS-CoV-2 when he was 8 months old. Previous to this event, both his grandfather and great-uncle had died of severe pneumonia and his mother had developed respiratory symptoms and fever. Over the following month he was seen five times in the emergency room and was hospitalized twice for recurrent BRUE. At the first hospital admission, after the second emergency room visit, he twice tested positive for COVID-19 after nasopharyngeal swab tests. During his second hospital admission, after the fifth emergency room visit, chest computed tomography revealed typical SARS-CoV-2 pneumonia. During a follow-up examination 6 months later, mild respiratory distress required administration of inhaled oxygen (0.5 L/min) and chest computed tomography disclosed a slight improvement in pulmonary involvement. The clinical manifestation of pulmonary complications from COVID-19 infection was unusual. This is the first report of an infant at high-risk for BRUE, which was the only manifestation of long-term lung involvement due to SARS-CoV-2 pneumonia.

Achondroplasia is associated with increased occurrence of apparent life-threatening events

AIM

To assess the clinical picture underlying apparent life-threatening events (ALTEs) occurring in infants with achondroplasia and provide guidance for evaluation after an event.

METHODS

A population of 477 individuals with achondroplasia was retrospectively reviewed, and information regarding possible ALTEs was recorded in a REDCap database.

RESULTS

ALTEs occurred in the first year of life in 18 of 477 individuals (3.8%). Most (14/18, 78%) occurred in the first 6 months of life and presented as episodes of apnoea and/or seizures. Of affected infants, 8/18 (44%) had more than one episode. Many of the initial ALTEs arose while infants were in car seats (11/18, 61%). Assessment following ALTEs most often demonstrated either craniocervical junction concerns and/or seizures, with 12/18 (67%) patients undergoing cervicomedullary decompression and 5/18 (28%) starting on anti-epileptic medications after the event.

CONCLUSION

Although this study is limited in size and was retrospective, it shows that infants with achondroplasia appear to be at high risk for ALTEs. Evaluation after an event should include neuroimaging of the foramen magnum, inpatient hospital observation including respiratory monitoring and electroencephalography, and a car seat challenge.

Clinical Characteristics and Outcomes of Patients Admitted with Brief Resolved Unexplained Events to a Tertiary Care Pediatric Intensive Care Unit

The aim of this study was to determine outcomes of patients admitted to a tertiary care pediatric intensive care unit (PICU) with brief, resolved, unexplained event (BRUE), and to review the diagnostic and treatment options utilized for such patients. A retrospective data analysis was conducted for infants and children who were admitted to the PICU at a tertiary hospital with a diagnosis of BRUE over a period of three years (2015-2017). The study included 30 infants, 15 males, and 15 females. All patients survived to hospital discharge. The most frequent presenting symptoms and signs were apnea (73.3%), cyanosis (60.0%), and cough (20.0%). The most frequent reported affected systems were respiratory (33.3%), gastrointestinal (20%), and infection-related illness (20.0%). We conclude that the careful history taking, complete physical examination, and the appropriate workup for patients with BRUE play an integral role in optimum health service and utilization of critical care beds. Survival to hospital discharge with no serious in-hospital events warrants the adaptation of evidence-based medicine guidelines to stratify such patients based on the risk of recurrence or a serious underlying condition. Prospective multicenter studies are recommended to explore the effectiveness of such guidelines implementation on outcomes and diagnostic testing in such patients to optimize the utilization of the limited critical care beds.

Outcome Prediction of Higher-Risk Brief Resolved Unexplained Events

OBJECTIVES

Brief resolved unexplained events (BRUEs) are classified as higher risk on the basis of patient and event characteristics, but there is limited evidence to guide management decisions. The authors of this study aim to describe patients with a higher-risk BRUE, determine the yield of diagnostic evaluation, and explore predictors of clinical outcomes.

METHODS

A retrospective medical record review was conducted for patients ≤365 days of age who were evaluated in a tertiary-care pediatric emergency department with a discharge diagnostic code indicative of a BRUE. Demographic and clinical characteristics, including diagnostic evaluation, are reported. Univariate and multivariate analyses were used to test the association of risk factors with clinical outcomes (serious underlying diagnosis, recurrent events, and return hospitalization).

RESULTS

Of 3325 patients, 98 (3%) met BRUE criteria and 88 were classified as higher risk; 0.6% of laboratory and 1.5% of ancillary tests were diagnostic, with 4 patients having a serious underlying diagnosis. Nine patients had recurrent events during hospitalization, and 2 were readmitted for a recurrent BRUE after their index visit. Prematurity was the only characteristic significantly associated with an outcome, increasing the odds of a recurrent event (odds ratio = 9.4; P = .02).

CONCLUSIONS

The majority of patients with a BRUE are higher risk, but the yield of diagnostic evaluation is low. Published risk criteria do not appear to be associated with adverse clinical outcomes except for prematurity and recurrent events. Future multicentered prospective studies are needed to validate risk stratification and develop management guidance for the higher-risk BRUE population.